ShepUMC
1 Nickel

Vostro 400 upgrades not running at full speed

Jump to solution

I recently upgraded my Vostro 400 (WinXP Pro SP3, BIOS V 1.0.15) with two 2GB sticks of PC2-6400 (800 MHz) RAM (4GB total) and a faster processor (INTEL Core 2 Duo E6850, @3.0GHz). The BIOS appears to correctly identify the new components and says the memory is operating at 800MHz. However, when I check the status using several applets (e.g., CPUID and PC Wizard) the results suggest that the memory is operating at 400MHz and the processor at just under 2GHz. Are there other settings that need to be changed to get the full speed? Or is this just an anomoly in the test programs? I don't see any CMOS/BIOS settings that I can change and the owner's manual doesn't say anything about jumpers to change on the motherboard.

0 Kudos
2 Solutions

Accepted Solutions
fireberd
6 Indium

Re: Vostro 400 upgrades not running at full speed

Jump to solution

Look at the CPUID display again.  You have DDR2 memory so if it's displaying 400 Mhz it's actually twice that speed or 800 Mhz.  Same way CPUID shows my CPU speed as 1600Mhz (it's a 2.8 Ghz Q6600).



I am not a Dell Employee

Dell forum member since 2002

Dell Inspiron 15 - 5577 Laptop

Home Built Desktop PC with ASUS ROG Z170, i7 6700K CPU

Windows 10 64 bit Pro and Windows 10 Insider Program Beta Versions. SSD drives. Cakewalk by BandLab and Studio One 4.1 Recordng Studio Software.

Dell S2719dgf Monitor

Member of Nashville based R.O.P.E.

jsktx
3 Argentium

Re: Vostro 400 upgrades not running at full speed

Jump to solution

For Intel CPUs this is called SpeadStep and the processor is designed to throttle back when it's not heavily used.  It will throttle up as needed.  The memory reading is also correct as the frequency is multiplied by a factor of 2.

Vostro 460 – Intel Core i7 2600 @ 3.4Ghz - 16GB DDR3 @ 1333MHz – Western Digital 500GB SATA 3 SSD – Western Digital 1TB SATA 3 HDD – ASUS GeForce GTX 550 Ti 1GB DDR5 – 16X DVD-RW – 16X DVD-ROM - Antec 550W PSU - Windows 10 Pro x64 - Dell E2211H Flat Panel Monitor
3 Replies
fireberd
6 Indium

Re: Vostro 400 upgrades not running at full speed

Jump to solution

Look at the CPUID display again.  You have DDR2 memory so if it's displaying 400 Mhz it's actually twice that speed or 800 Mhz.  Same way CPUID shows my CPU speed as 1600Mhz (it's a 2.8 Ghz Q6600).



I am not a Dell Employee

Dell forum member since 2002

Dell Inspiron 15 - 5577 Laptop

Home Built Desktop PC with ASUS ROG Z170, i7 6700K CPU

Windows 10 64 bit Pro and Windows 10 Insider Program Beta Versions. SSD drives. Cakewalk by BandLab and Studio One 4.1 Recordng Studio Software.

Dell S2719dgf Monitor

Member of Nashville based R.O.P.E.

jsktx
3 Argentium

Re: Vostro 400 upgrades not running at full speed

Jump to solution

For Intel CPUs this is called SpeadStep and the processor is designed to throttle back when it's not heavily used.  It will throttle up as needed.  The memory reading is also correct as the frequency is multiplied by a factor of 2.

Vostro 460 – Intel Core i7 2600 @ 3.4Ghz - 16GB DDR3 @ 1333MHz – Western Digital 500GB SATA 3 SSD – Western Digital 1TB SATA 3 HDD – ASUS GeForce GTX 550 Ti 1GB DDR5 – 16X DVD-RW – 16X DVD-ROM - Antec 550W PSU - Windows 10 Pro x64 - Dell E2211H Flat Panel Monitor
ShepUMC
1 Nickel

Re: Vostro 400 upgrades not running at full speed

Jump to solution

So it sounds like the numbers displayed in CPUID are a bit misleading, and my system is probably operating at the speeds it is supposed to.

0 Kudos